Like Christianity, Buddhism explained suffering. In forms that established themselves in China, Buddhism offered the same sort of comfort to bereaved survivors and victims of violence or of disease as Christian faith did in the Roman world. Buddhism of course originated in India, where disease incidence was probably always very high as compared with civilizations based in cooler climates; Christianity, too, took shape in the urban environments of Jerusalem, Antioch, and Alexandria where the incidence of infectious disease was certainly very high as compared to conditions in cooler and less crowded places. From their inception, therefore, both faiths had to deal with sudden death by disease as one of the conspicuous facts of human life. Consequently, it is not altogether surprising that both religions taught that death was a release from pain, and a blessed avenue of entry upon a delightful afterlife where loved ones would be reunited, and earthly injustices and pains amply compensated for.

Religious history also offers another striking parallel between Rome and China. The Buddhist faith began to penetrate the Han empire in the first century A.D., and soon won converts in high places. Its period of official dominance in court circles extended from the third to the ninth centuries A.D. This obviously parallels the successes that came to Christianity in the Roman empire during the same period.

Details of early domestications remain unclear. One must assume a process of mutual accommodation between humanity and various domesticable species. This involved rapid and sometimes far-reaching change in the biological character of domesticated plants and animals as a result of both accidental and deliberate selection for particular traits. Conversely, one can assume that a radical, if rarely deliberate, selection among human beings occurred as well. Individuals who refused to submit to laborious routines of farming, for instance, must often have failed to survive, and those who could not or would not save seed for next year's planting, and instead ate all they had, were quickly eliminated from communities that become dependent upon annual crops.

Looked at from the point of view of other organisms, humankind resembles an acute epidemic disease, whose occasional lapses into less virulent forms of behavior have never yet sufficed to permit any really stable, chronic relationship to establish itself.

Ever since language allowed human cultural evolution to impinge upon age-old processes of biological evolution, humankind has been in a position to upset older balances of nature in quite the same fashion as disease upsets the natural balance within a host's body. Time and again, a temporary approach to stabilization of new relationships occurred as natural limits to the ravages of humankind upon other life forms manifested themselves. Yet, sooner or later, and always within a span of time that remained miniscule in comparison with the standards of biological evolution, humanity discovered new techniques allowing fresh exploitation of hitherto inaccessible forms of life.

When variations could be so extravagantly successful, displacement of one humanoid population by another even more effective group of hunters must have occurred frequently. Survival was more likely for the more formidable in battle as well as for the more efficient in the hunt.

In Korea and Japan, the Chinese example began to find fertile ground as the political and social organization or those regions developed toward civilized complexity. Buddhist monks became the principle carriers of high Chinese culture to Korea and Japan. ...The Chinese model, while of the utmost importance, never eclipsed the local differences that made Japan always and Korea sometimes so distinct from China as properly to constitute a separate civilization.

The Chinese language lacked terms capable of conveying Buddhist meanings; and not until the fifth century did a handful of scholars become sufficiently at home in both Chinese and Indian learning to be able to translate Buddhist texts into Chinese with a modicum of adequacy. ...the novel and initially alien outlook of the Indian faith had somehow to come to terms with the various strands already woven into Chinese culture, ranging... from Confucian and Taoist learning to local sub-literate peasant magic. ...while accommodating themselves to older Chinese expectations, Buddhist doctrines and practices simultaneously widened and redefined traditional Chinese sensibilities and aspirations.

The diffusion of alchemy westward, like the movement of astrology eastward, became significant only in the centuries after 200 A.D. The conservatism of learning was such that, even when commercial intercourse had made intellectual contacts possible, little serious interchange took place until severe social stress had disturbed the even tenor of the times in China, India, and Europe. Technology was a little, but only a little, less conservative.

Ssu-ma Ch'ien's many-volumed history of China established the frame within which Chinese history continued to be written almost to the present day. Ssu-ma Ch'ien accepted and made canonical the theory that each dynasty began with an especially virtuous ruler and then gradually dissipated that virtue until Heaven lost patience and substituted a new dynasty in its place.

The laws of nature, as analyzed mathematically and descriptively by Ptolemy and Galen, bore an interesting, and perhaps not entirely accidental similarity to the law of nations and of nature, as discerned by a long succession of Roman jurists. ...The concept of an objective law applicable to human affairs, yet operating in accord with Nature and Reason and apart both from divine revelation and from human whim or passion, was peculiar to Rome and societies descended from Rome.

The decline of Indian Buddhism was centrally due to the fact that it never offered the Indian laity a complete religion. Early Buddhism knew no ceremonies for birth and death, marriage, illness, and other critical turns of private life... Only for the community of monks did Buddhism provide a complete and well-defined way of life. ...But Brahmins were needed for all the ordinary crises in life, ready with their rites and sacred formulas to ward off danger or minimize the damage. This elemental fact assured the survival of Brahminism in India.